Atomic level structural control and characterisation of perovskite quantum dots

钙钛矿量子点的原子级结构控制与表征

• 批准号: 22KJ0994
• 负责人: シュヴァリエ オリビエ
• 金额: $ 1.09万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2023
• 资助国家: 日本
• 起止时间: 2023-03-08 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22KJ0994/
• 关键词: Perovskite; Nanocluster; Blue LED

In the past year, we investigated the effect of carboxylic acid on the performances and properties of perovskite nanocrystals. Specifically, we used Malic Acid to synthesize 2.5 nm blue-emitting perovskite nanocubes. We characterized their properties and demonstrated the emission was narrow and highly efficient, yielding promising blue light-emitting diodes. The stability of the material was evaluated and the narrow emission was maintained over a wide range of voltages. We then precisely characterized their structure and determined a precise cluster composition. We demonstrated ligand binding was limited to the corners of the nanocubes and that ligand chirality transfer could lead to polarized dots. We also investigated surface treatment and their modification via ligand replacement.

在过去的一年里，我们研究了羧酸对钙钛矿纳米晶性能和性质的影响。具体来说，我们使用苹果酸合成了2.5 nm的蓝色发射钙钛矿纳米立方体。我们表征了它们的性质，并证明了其发射窄且高效，产生了有前途的蓝色发光二极管。评价了材料的稳定性，并在宽电压范围内保持窄发射。然后，我们精确地表征了它们的结构，并确定了精确的簇组成。我们证明了配体结合仅限于纳米立方体的角落，配体手性转移可能导致极化点。我们还研究了表面处理和它们的改性通过配体置换。

项目成果

Atomic precision synthesis and characterization of perovskite quantum dots for blue light emitting diodes

蓝光发光二极管钙钛矿量子点的原子精密合成与表征

• 发表时间: 2022
• 作者: O. Chevalier;T. Nakamuro;R. Shang and E. Nakamura
• 通讯作者: R. Shang and E. Nakamura

Polycarboxylates as synthetic tools for small and efficient perovskite quantum dots

聚羧酸盐作为小型高效钙钛矿量子点的合成工具

• 发表时间: 2021
• 作者: Olivier CHAVELIER;Takayuki NAKAMURO;Rui SHANG;Eiichi NAKAMURA
• 通讯作者: Eiichi NAKAMURA

Between molecules and nanocrystals: synthesis and properties of perovskite nanoclusters

分子与纳米晶之间：钙钛矿纳米团簇的合成与性能

• 发表时间: 2023
• 作者: O. Chevalier;T. Nakamuro;N. Yoshikawa;R. Shimano;R. Shang and E.
• 通讯作者: R. Shang and E.

Precision Synthesis and Atomistic Analysis of Deep-Blue Cubic Quantum Dots Made via Self-Organization

自组织深蓝色立方量子点的精密合成和原子分析

• DOI: 10.1021/jacs.2c08227
• 发表时间: 2022
• 期刊: Journal of the American Chemical Society
• 影响因子: 15
• 作者: Chevalier Olivier J. G. L.;Nakamuro Takayuki;Sato Wataru;Miyashita Satoru;Chiba Takayuki;Kido Junji;Shang Rui;Nakamura Eiichi
• 通讯作者: Nakamura Eiichi